Steam-boiler.



C. Z. & E. S. ALEXANDER.

STEAM BOILER.

APPLICATION FILED OCT. 31. 1916' Patented Sept. 25, 191?.

CARL Z. ALEXANDER AND EARL S. ALEXANDER, NEWARK, NEW JERSEY.

SEE-BOILER.

Specification of Letters Patent.

Patented Sept. 25, 1129113.

Application filed October 31, 1916. Serial No. 128,674.

and EARL S. ALEXANDER, citizens of the,

United States, and residents of Newark, county of Essex, and State ofNew Jersey, have invented certain new and useful Improvements inSteam-Boilers, of which the following is a specification.

This lnvention relates to an improved steam boiler which is adapted foruse with gas or .oil as a fuel since the boiler needs a small heatingsur ace.

The boiler is particularly adapted in heating systems employing steam,the water being boiled in comparatively small quantities, suchquantities being supplied in quick succession so as to make apractically continuous supply of Water converted quickly into steam.

The boiler is constructed so as to spread the water out in thin sheetsor streams assing over the flame of the burners, the eeding of the waterbeing automatic and of proper quantity to insure the major portion of itbeing converted into steam and at the same time keeping the heatingsurface of the boiler covered at all times.

The invention is further designed to provide a steam boiler thatoccupies comparatively little space and can be operated with an economyof fuel.

The invention is susceptible to many changes in the details of itsconstruction, but in order .to clearly illustrate our invention we show,in the accompanying drawing, one form of boiler.

11 said drawing, Figure 1 illustrates parts of a heating systemsufficient to show how the arts cooperate. vertical section through thecenter of the boiler shown in Fig. 1, and Fig. 3 is a horizontal sectiontaken on line 33, in Fig. 2.

The boiler 10 is arranged so that it is connected to a suitable sourceof water supply which is controlled so as to maintain an approximatelyconstant and predetermined level of water in the boiler. In the drawingsuch source is shown in the form of a reservoir 11 which receives waterfrom the return pipe 12 of the heating system. The radiator 13 isillustrated to show one form of heating unit receiving steam from thesteam pipe 14 which receives steam from the boiler 10. The feed pipe 15conducts water from the source of supply, as the tank or reservoir 11 tothe base portion 16 of the Fig. 2 is an enlarged boiler, the baseportion being in the form of a small reservoir with an open top andhaving a geyser tube 17 in it. The geyser tube has a base 18 havingperforations 19 to permit water to enter the tube 18, the tube 18 beingsituated just above the bottom 20 of the base portion 16. The baseportion 16 is heated by means of a bottom burner 21 fed by a pipe 22'from the fuel pipe 23, the cook 24 regulating the-amount of fuelsupplied. In the drawing gas burners are shown and the ordinary type ofmixing valve 24* is illustrated.

The top of the geyser tube is arranged to deposit the water issuing fromit on a spreading or distributing plate 25 which inclines slightlydownward toward its outer base portion is attached to the bottom of thebody portion, 27 of the boiler, the body portion having a bottom plate28, a side wall 29 and a top plate 30, which top plate is constructed sothat it conducts steam to the steam pipe 14:. The water running ofl theedge of the plate 25 passes onto the bottom plate 28, the boilerillustrated having the plate 25 made smaller in diameter than the sidewall 29 to form the space 31 through which the water flows. Other formscan be devised for allowing the water to descend to the plate 28. Theplate 28 has a trough 32 formed in it, under which trough the upperburner 33 is placed to further heat the Water in the trough. In thedrawing the trough or deepened portion 32 is shown adjacent to the edgeof the base portion 16, but it can be made of larger diameter ifdesired.- The trough causes an accumulation of water at that point,thereby insuring a suficient body of steam without danger of burning outthe boiler over the burner 33. The burner 33 is preferably regulatedindependently of the burner 21, the cook 35 being installed to controlthe amount of fuel passing into the burner 33.

The water that is forced up through the geyser tube contributes steam tothe steam chamber 36 of the body portion 27 and the water boiled on thebottom plate 28 and in 'the trough 32 is also converted into steam,passing into the steam chamber 36 through the openings 26. The water onthe plates 25 and 28 is passed over them by gravity and in shallowlayers or sheets, bein thus quickly and economically converte into steamwhich passes from the steam chamber 36 into the steam pipe 14 and thusto; .the heating units. The water that is not vaporized in the trough 32passes over the edge of the trough and into the open top of the baseportion 16. The feed pipe 15 is preferably passed over the burner 21 toheat the water on its way to the boiler. The tank or reservoir 11maintains the water at a level to insure the trough part 32 beingcovered with water when the heater is started, that is, at about thelevel shown by the line a in Fig. 2. It will be understood that meanscan be employed for controllin the levelof water in the boiler other tan the tank 11, and any of the well known devicesfor this purpose,float-operated or otherwise, can be employed if necessary.

Weprefer to direct and control the heat from the burners so as tosecurea maximum of heating of water, the drawing illustrating one formof structure to bring this about. The shell or casing 37 is formed witha side wall 38 and a top and bottom wall 39 and 40, respectively, allspaced from the body portion of the boiler so as to form a heatconducting passage ending in the outlet 41. A ring 42 depends from thebottom of the casing to protect the burner from drafts. A thimble 4:3 incloses the base portion 16 and while it protects the burner 21 it alsoserves to confine the heat within the thimble and to economize the fuelsupply, the top of the thimble being open and adapted to conduct theheat from the burner 21 to the inside of the easing 37 preferably as at44 inside the ring 42. Suitable bafiie-plates 45 can be staggered orotherwise arranged to interrupt or to outline a circuitous path for theheat passing under the casing 37.

This boiler occupies but little space, is

easily controlled and it economizes fuel while permitting theutilization of gas or oil for purposes of fuel.

Having thus described our invention, we cla1m:

1. A steam boiler comprising a geyser tube, a container for said tube,plates to conduct water from the top of the geyser tube back to thecontainer, the plates being but slightly inclined and of relativelylarge dlameter, means for heating the container, and means for heatingthe plate fromwhich the water flows into the container.

2. A steam boiler comprising a geyser tube, a base portion containingwater in which the geyser tube is arranged and from which it projects, abody portion of considerably lar er diameter than the base portion andwit a downwardly inclined bottom to conduct water to the inside of saidbase portion, and means for conducting water from the top of the geysertube to the outer edge of the bottom aforesaid.

3. A steam boiler comprising a body portion forming a steam chamber andhaving an inwardly and slightly downwardly inclined bottom with acentral opening, a plate within the body portion and less in diameter,the plate being slightly inclined outwardly, the plate having openingswith raised rims to permit the passage of steam and prevent the passageof water through the openings, a geyser tube projecting through thecenter of the plate, means for conducting waterfrom the open bottom ofthe body portion to the geyser tube, means for heating the water in theconducting means to force it through the tube, and means for heating thebottom of the body portion near the opening therein.

4. A steam boiler comprising a body portion forming a steam chamber andhaving an inwardly and slightly. downwardly inclined bottom with acentral opening, a plate within the body portion and less in diameter,the plate being slightly inclined outwardly, the plate havmgopeningswith raised rims to permit the passage of steam and prevent the passageof water through the openings, a geyser tube projecting through thecenter of the plate, means for conducting water from the open bottom ofthe body portion to the geyser tube, means for heating the water. intheconducting means to force it through the tube, and means for heatingthe'bottom of the body portion near the opening therein, the bottom ofthe body portion being depressed above the last-mentioned heating meansto provide for a slightly greater depth of water.

5. A steam boiler comprising -a geyser tube, a base portion containingthe tube, means for heating the base portion and thus forcing waterthrough the geyser tube, plates arranged with a slight incline andadapted to receive water from the geyser tube and to retard the gravityflow of said water, a body,portion inclosing said plates to form a steamchamber, the body portion having open communication with the baseportion, and means for heating the lower of said plates.

6. A steam boiler comprising a geyser tube, means for heating water andthus forcing it through the geyser tube, plates arranged with a slightincline and adapted to receive water from the geyser tube and y toretard the gravity flow of said water, a body portion inclosing saidplates to form a steam chamber, one of said plates having a depressedportion forming a trough to therewith, a geyser tube in the base portionwith its outlet end within the body portion, means for conducting waterin a shallow sheet from the tube to the bottom of the body portion onwhich bottom it flows back toward the base portion, and means forheating the base portion and the bottom of the body portion.

8. A steam boiler c omprising a base portion having a geyser tubeextending from the top thereof, a body portion resting on the baseportion and in communication therewith, the bottom of the body portionbeing inclined toward said base portion, an

. inclined plate within said body portion and onto which water from thegeyser flows, the plate being adapted to conduct water to the inclinedbottom of the body portion, and means for heating the base portion andthe body portion.

9. A steam boiler comprising a base portion having a geyser tubeextending from the top thereof, a burner under the base portion, a bodyportion resting on the base portion and in communication therewith, thebottom of the body portion being inclined toward said base portion, aninclined plate within said body portion and on the top of the geyser andadapted to conduct water to the inclined bottom of the body portion,said inclined bottom having a trough therein adjacent to the topedge ofthe base portion, and .a burner under said trough.

10. A steam boiler comprising a base portion having a geyser tubetherein, a burner under the base portion, a body portion on the baseportion, a steam pipe in communication with said body portion, thebottom of the body portion being inclined toward the base portion, aplate within said body portion to receive water from the geyser tube andconduct it in a shallow stream to the inclined bottom of said bodyportion, and a burner under the inclined bottom of said body portion.

11. A steam boiler comprising a base portion having a geyser tubetherein, a burner under the base portion, a body portion on the baseportion, a steam pipe in communication with said body portion,the bottomof the body portion being inclined toward the base portion, a platewithin said body portion to receive water from the geyser tube andconduct it in a shallow stream to the inclined bottom of said bodyportion, a burner under the inclined bottom of said body portion, and acasing surrounding said body portion and adapted to conduct heat aroundsaid body portion from said last mentioned burner.

12. A steam boiler comprising a body portion having a downwardly andinwardly inclined bottom, a downwardly and outwardly inclined platewithin the body portion directly above the bottom thereof and slightlysmaller in diameter than the inner diameter of the side walls of thebody portion to provide a passage for water, a base portion at thebottom of the body portion and'in communication therewith, a geyser tubein the base portion and adapted to deposit water on the top of theoutwardly inclined plate, a burner under said body portion, and a burnerunder the base portion.

In testimony that we claim the foregoing, we have hereto set our hands,this 28th day of October, 1916.

CARL Z. ALEXANDER. EARL S. ALEXANDER.

